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I.MX6S imx-ipuv3 freeze during boot

Question asked by Michael Kurmann on Apr 15, 2019
Latest reply on May 12, 2019 by Michael Kurmann



I am currently trying to port an embbeded Linux from a older i.MX6s to a newer industial model:


Kernel version:

Linux arm 3.0.35+ #1 PREEMPT armv7l GNU/Linux


While I do not see any notable difference in the booting process as well as during runtime itself, it sometimes happens (1 out of 5) that the boot process freezes completly during the initalization of the imx-ipuv3 and the only solution is powering it off and on again.

It freezes before the info line:

imx-ipuv3 imx-ipuv3.0: IPU DMFC NORMAL mode: 1(0~1), 5B(4,5), 5F(6,7)

can be printed out.

This behavior can be reproduced independent of the U-Boot or the Hardware used.


Is there an important difference in those two CPU which I completly overlooked ?


Thanks in advance for the help



Michael Kurmann